Write file

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries the full burden of behavioral disclosure. It reveals that the tool can overwrite (destructive) and that parent directories are auto-created. However, it does not disclose consequences of overwriting, permission requirements, or error behaviors, leaving gaps for a mutation tool.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, precisely worded sentence with no redundancy. It front-loads the core purpose ('Create or overwrite a file') and adds one key behavior (auto-creation of parent dirs). Every word earns its place.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a simple write tool with three params, the description covers the primary action and a notable behavior. However, it omits any parameter details beyond the path, and with no output schema, an agent may wonder about return values or error handling. It is adequate but leaves room for improvement.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is only 33% (only 'path' has a description). The description does not explain the 'app' or 'content' parameters. It only mentions 'in an app' without detailing the app parameter, and 'content' is never described. With low schema coverage, the description should compensate, but it does not.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description states a clear verb and resource: 'Create or overwrite a file in an app.' This distinguishes it from sibling tools like list_files, read_file, and delete_file by implying a write operation. However, it does not explicitly name any sibling tools, so it does not fully capitalize on differentiation.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides no explicit guidance on when to use this tool versus alternatives. It does not mention any conditions, exclusions, or workflows. An agent must infer from the name and siblings that this is for writing files instead of reading or listing them.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.